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Thread: Can someone explain enthalpy H = U + pV

  1. #1 Can someone explain enthalpy H = U + pV 
    Junior Member AllyBechdel's Avatar
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    Nov 2017
    Hi everyone, I'm trying to figure out what H = U + pV means. I know what enthalpy means in theory: the total energy within a system. But I just don't understand the equation... Can someone explain?

    I can't upload any pictures so I can't make a screenshot and post it here... But here's the website where I got my explanation for enthalpy:

    I don't understand what they mean by " As sum of the internal energy U and the product of Volume V and pressure p itís a thermodynamic state function" Why do these things equal enthalpy?
    Last edited by AllyBechdel; 12-04-2017 at 12:01 PM.
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